1901-2000 Degrees Fahrenheit 1 61.2 56.3 4.9 111 19 1915 1907 2015 2012 top-third 2 57.8 52.9 4.9 126 4 1960 2017 2015 2000 top-tenth 1938 3 54.0 50.4 3.6 117 13 1978 2017 2015 2012 top-tenth 4 53.4 49.6 3.8 123 6 1915 1907 2015 2000 top-tenth 5 54.2 50.6 3.6 125 4 1899,1912 2017 2015 2000 top-tenth 1999 6 56.7 53.2 3.5 126 3 1899,1977 2017 2015 2000 top-tenth 7 59.9 56.4 3.5 127 2 1977 2017 2015 1999 top-tenth 1999 8 62.8 59.6 3.2 126 3 1977 2017 2015 2000 top-tenth 9 65.1 62.1 3.0 125 4 1977 2017 2015 2012 top-tenth 10 66.5 63.9 2.6 123 6 1977 2017 2015 2012 top-tenth 11 67.0 64.6 2.4 123 6 1977 2017 2015 2012 top-tenth 2000 12 66.9 64.6 2.3 121 8 1977 2012 2015 2013 top-tenth 18 62.4 60.8 1.6 116 12 1913 2017 2015 2013 top-tenth 24 65.9 64.6 1.3 117 11 1978 2013 2015 2013 top-tenth 1999,2001,2006,2019,2022 36 65.4 64.6 0.8 100 27 1977 2013 2015 2015 top-third 1911,1997,2011,2015 48 65.8 64.6 1.2 109 17 1915 2019 2011 2015 top-third 1957,2008 60 66.3 64.6 1.7 121 4 1962,1977 2020 2015 2013 top-tenth 2013,2017,2019